diff --git a/src/runtime2/tests/mod.rs b/src/runtime2/tests/mod.rs
index 3c2ce3c1a3b75f637a20b7534adf698a2395cefd..46cf663a10725b3578b54782bfb256bb79b8cc93 100644
--- a/src/runtime2/tests/mod.rs
+++ b/src/runtime2/tests/mod.rs
@@ -10,9 +10,14 @@ use crate::protocol::eval::*;
 use crate::runtime2::native::{ApplicationSyncAction};
 
 // Generic testing constants, use when appropriate to simplify stress-testing
-pub(crate) const NUM_THREADS: u32 = 3;     // number of threads in runtime
-pub(crate) const NUM_INSTANCES: u32 = 7;   // number of test instances constructed
-pub(crate) const NUM_LOOPS: u32 = 8;       // number of loops within a single test (not used by all tests)
+// pub(crate) const NUM_THREADS: u32 = 3;     // number of threads in runtime
+// pub(crate) const NUM_INSTANCES: u32 = 7;   // number of test instances constructed
+// pub(crate) const NUM_LOOPS: u32 = 8;       // number of loops within a single test (not used by all tests)
+
+pub(crate) const NUM_THREADS: u32 = 1;
+pub(crate) const NUM_INSTANCES: u32 = 1;
+pub(crate) const NUM_LOOPS: u32 = 1;
+
 
 fn create_runtime(pdl: &str) -> Runtime {
     let protocol = ProtocolDescription::parse(pdl.as_bytes()).expect("parse pdl");